5145139957 has 2 divisors, whose sum is σ = 5145139958. Its totient is φ = 5145139956.

The previous prime is 5145139949. The next prime is 5145140003. The reversal of 5145139957 is 7599315415.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4018799236 + 1126340721 = 63394^2 + 33561^2 .

It is a cyclic number.

It is not a de Polignac number, because 5145139957 - 2³ = 5145139949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5145139957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5145139927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2572569978 + 2572569979.

It is an arithmetic number, because the mean of its divisors is an integer number (2572569979).

Almost surely, 2^5145139957 is an apocalyptic number.

It is an amenable number.

5145139957 is a deficient number, since it is larger than the sum of its proper divisors (1).

5145139957 is an equidigital number, since it uses as much as digits as its factorization.

5145139957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 850500, while the sum is 49.

The square root of 5145139957 is about 71729.6309554148. The cubic root of 5145139957 is about 1726.3641055694.

The spelling of 5145139957 in words is "five billion, one hundred forty-five million, one hundred thirty-nine thousand, nine hundred fifty-seven".